404020153 has 4 divisors (see below), whose sum is σ = 404067060. Its totient is φ = 403973248.

The previous prime is 404020129. The next prime is 404020159. The reversal of 404020153 is 351020404.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 285035689 + 118984464 = 16883^2 + 10908^2 .

It is a cyclic number.

It is not a de Polignac number, because 404020153 - 2⁵ = 404020121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 404020153.

It is not an unprimeable number, because it can be changed into a prime (404020159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6400 + ... + 29137.

It is an arithmetic number, because the mean of its divisors is an integer number (101016765).

Almost surely, 2^404020153 is an apocalyptic number.

It is an amenable number.

404020153 is a deficient number, since it is larger than the sum of its proper divisors (46907).

404020153 is a wasteful number, since it uses less digits than its factorization.

404020153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46906.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 404020153 is about 20100.2525606023. The cubic root of 404020153 is about 739.2664712025.

Adding to 404020153 its reverse (351020404), we get a palindrome (755040557).

The spelling of 404020153 in words is "four hundred four million, twenty thousand, one hundred fifty-three".